In the USA, go by the API ratings, an "S" something letter. SN is currently the best for good sealing, temperature, and minimum sludge. Wear resistance is something else.
Owners manual states at least API-SM and shows a Quaker State logo. Before the latest GM dexos stuff, been using Quaker State for years, the conventional stuff without engine problems even with well over 200K miles on the vehicle. With newer stuff, switched to Mobile One, but see it show much higher engine wear than Quaker State Ultimate Durability.
Other factor is how often you replace it, but dealer is pretty firm on 7,500 miles absolute maximum to maintain the warranty.
Owners manual states at least API-SM and shows a Quaker State logo. Before the latest GM dexos stuff, been using Quaker State for years, the conventional stuff without engine problems even with well over 200K miles on the vehicle. With newer stuff, switched to Mobile One, but see it show much higher engine wear than Quaker State Ultimate Durability.
Other factor is how often you replace it, but dealer is pretty firm on 7,500 miles absolute maximum to maintain the warranty.